Integrated thermal management system of new energy automobile

Abstract

The integrated heat management system of the new energy automobile comprises a motor, a motor controller, an all-in-one controller, a PTC heater and an air blower which are installed in the new energy automobile, and further comprises a first pipeline containing cooling liquid, and a water pump is installed on the first pipeline in a matched mode; the first pipeline sequentially passes through heat dissipation openings of the motor, the motor controller and the all-in-one controller, a radiator is further installed on the first pipeline, and an electronic heat dissipation fan is installed on the radiator. The PTC heater can be turned off when the temperature of the cooling liquid is increased to the specified temperature by waste heat generated by the automobile electric driving system in the automobile, the waste heat is used for heating the cab, the energy of a power battery of the whole new energy automobile is saved, the driving range is prolonged, and the system is few in component parts, does not need to be controlled by a control program and is convenient to operate. Therefore, fault rate is low, cost is low, self weight is light, and weight reduction design of the new energy automobile is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of integrated thermal management systems for new energy vehicles, and in particular to an integrated thermal management system for new energy vehicles. Background Technology

[0002] Currently, integrated thermal management systems for new energy vehicles include electric air conditioning compressors, electronic water pumps, air conditioning condensers, unit controllers, water-fluorine heat exchangers, radiator tanks, electronic fans, cooling components, inlet temperature sensors, outlet temperature sensors, ambient temperature sensors, air conditioning high-pressure side pressure sensors, air conditioning low-pressure side pressure sensors, and refrigerant dryer expansion valve assemblies.

[0003] The heat generated by conventional electric drive systems in new energy vehicles is excess heat that is not utilized, wasting the energy of the vehicle's power battery. Furthermore, conventional integrated thermal management systems for new energy vehicles have many components, resulting in problems such as cumbersome control programs, high failure rates, high costs, and heavy weight.

[0004] Therefore, it is essential to provide an integrated thermal management system for new energy vehicles to address the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an integrated thermal management system for new energy vehicles. This integrated thermal management system for new energy vehicles determines the coolant temperature through an electronic thermostat. When the waste heat generated by the vehicle's electric drive system raises the coolant temperature to a specified temperature, the PTC heater can be turned off, and the waste heat is used to heat the cab. This saves energy of the vehicle's power battery, extends the driving range, and the system has fewer components and does not require control program control. Therefore, it has a low failure rate, low cost, and light weight, which is beneficial to the weight reduction design of new energy vehicles.

[0006] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0007] An integrated thermal management system for new energy vehicles is provided, including a motor, a motor controller, a multi-function controller, a PTC heater, and a blower installed inside the new energy vehicle. It also includes a first pipeline containing coolant, a water pump installed on the first pipeline, and the first pipeline passing through the heat dissipation ports of the motor, the motor controller, and the multi-function controller in sequence. A radiator is also installed on the first pipeline, and an electronic cooling fan is installed on the radiator. An electronic thermostat is also installed on the first pipeline, and a first one-way valve is installed between the electronic thermostat and the radiator on the first pipeline.

[0008] The first pipeline is connected to a second pipeline via an electronic thermostat. A heat exchanger is installed on the second pipeline, and a PTC heater and a blower are installed on the heat exchanger. A second check valve is also installed on the second pipeline. The end of the second pipeline away from the electronic thermostat is connected to the first pipeline between the radiator and the first check valve.

[0009] Specifically, the flow direction of both the first check valve and the second check valve is from the electronic thermostat to the radiator.

[0010] Preferably, the opening temperature of the electronic thermostat is not lower than 45°C. When the electronic thermostat is open, the first one-way valve is closed, the second one-way valve is open, and the PTC heater is closed. When the electronic thermostat is closed, the first one-way valve is open, the second one-way valve is closed, and the PTC heater is open.

[0011] This invention uses an electronic thermostat to determine the coolant temperature. When the waste heat generated by the vehicle's electric drive system raises the coolant temperature to a specified level, the PTC heater can be turned off, and the waste heat can be used to heat the cab. This saves energy from the vehicle's power battery, extends the driving range, and the system has fewer components and does not require control programs, resulting in a low failure rate, low cost, and light weight, which is beneficial for the weight reduction design of new energy vehicles. Attached Figure Description

[0012] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0013] Figure 1 This is a schematic diagram of the system structure of an integrated thermal management system for new energy vehicles according to this utility model.

[0014] from Figure 1 Including:

[0015] 1. Electric motor;

[0016] 2. Motor controller;

[0017] 3. All-in-one controller;

[0018] 4. PTC heater;

[0019] 5. Blower;

[0020] 6. First pipeline;

[0021] 7. Water pump;

[0022] 8. Radiator;

[0023] 9. Electronic cooling fan;

[0024] 10. Electronic thermostat;

[0025] 11. First check valve;

[0026] 12. Second pipeline;

[0027] 13. Heat exchanger;

[0028] 14. Second check valve. Detailed Implementation

[0029] The present invention will be further described in conjunction with the following embodiments.

[0030] Example 1.

[0031] like Figure 1 As shown, an integrated thermal management system for new energy vehicles includes a motor 1, a motor controller 2, a multi-function controller 3, a PTC heater 4, and a blower 5 installed inside the new energy vehicle. It also includes a first pipeline 6 containing coolant, a water pump 7 installed on the first pipeline 6, and the first pipeline 6 passes sequentially through the heat dissipation ports of the motor 1, the motor controller 2, and the multi-function controller 3. A radiator 8 is also installed on the first pipeline 6, and an electronic cooling fan 9 is installed on the radiator 8. An electronic thermostat 10 is also installed on the first pipeline 6, and a first one-way valve 11 is installed between the electronic thermostat 10 and the radiator 8 on the first pipeline 6.

[0032] This application relates to cab heating and thermal energy management for new energy vehicles. First, when the vehicle starts, the heat generated by the motor 1, motor controller 2, and multi-function controller 3 is recovered and exchanged through the first pipe 6. This heat is used to heat the coolant inside the first pipe 6. The first pipe 6 can then deliver the hot coolant into the radiator 8. The heat from the radiator 8 is blown into the cab by the electronic cooling fan 9 for heating. At the same time, the opening and closing of the first pipe 6 is controlled by the electronic thermostat 10. When the coolant in the first water circuit reaches the specified temperature, this pipe is activated to achieve the effect of energy recovery and utilization.

[0033] The first pipe 6 is also connected to the second pipe 12 via the electronic thermostat 10. A heat exchanger 13 is installed on the second pipe 12. A PTC heater 4 and a blower 5 are installed on the heat exchanger 13. A second check valve 14 is also installed on the second pipe 12. The end of the second pipe 12 away from the electronic thermostat 10 is connected to the first pipe 6 between the radiator 8 and the first check valve 11.

[0034] The second pipeline 12 is activated when the car is first started. When a new energy vehicle is first started, the coolant temperature in the first pipeline 6 is low and cannot quickly provide heat to the cab. At this time, electric auxiliary heating is carried out through the PTC heater 4, and the cab is heated by the heat exchanger 13 and the blower 5.

[0035] The flow direction of both the first check valve 11 and the second check valve 14 is from the electronic thermostat 10 to the radiator 8.

[0036] The opening temperature of the electronic thermostat 10 is not lower than 45°C. When the electronic thermostat 10 is open, the first one-way valve 11 is closed, the second one-way valve 14 is open, and the PTC heater 4 is closed. When the electronic thermostat 10 is closed, the first one-way valve 11 is open, the second one-way valve 14 is closed, and the PTC heater 4 is open.

[0037] At the initial stage of vehicle start-up, due to the low winter temperature, the cooling system water temperature is low and cannot provide warm air. At this time, the driver's cabin heater switch is turned on, and the PTC heater 4 works to provide warmth. At this stage, after the coolant passes through the multi-controller 3, motor controller 2 and motor 1, the thermostat cannot reach the opening temperature. At this time, the first pipe 6 is opened and the second pipe 12 is closed. The coolant circulates through the first flow radiator 8. The electric fan does not work at low temperatures.

[0038] During normal driving, when the coolant temperature rises above 45°C, the thermostat opens. At this time, the first pipe 6 closes and the second pipe 12 opens. The high-temperature coolant flows through the heat exchanger 13 in the driver's cab. The electronic thermostat 10 detects the temperature rise and shuts off the PTC heating. At this time, the excess heat from the electric drive system is used for heating.

[0039] This invention uses an electronic thermostat 10 to determine the coolant temperature. When the waste heat generated by the vehicle's electric drive system raises the coolant temperature to a specified temperature, the PTC heater 4 can be turned off, and the waste heat can be used to heat the cab. This saves energy from the vehicle's power battery, extends the driving range, and the system has fewer components and does not require control programs. Therefore, it has a low failure rate, low cost, and light weight, which is beneficial for the weight reduction design of new energy vehicles.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An integrated thermal management system for new energy vehicles, characterized in that: The device includes a motor, a motor controller, a multi-function controller, a PTC heater, and a blower installed inside the new energy vehicle. It also includes a first pipeline containing coolant, on which a water pump is installed. The first pipeline passes sequentially through the heat dissipation ports of the motor, the motor controller, and the multi-function controller. A radiator is also installed on the first pipeline, and an electronic cooling fan is installed on the radiator. An electronic thermostat is also installed on the first pipeline, and a first one-way valve is installed between the electronic thermostat and the radiator on the first pipeline. The first pipeline is also connected to a second pipeline via the electronic thermostat. A heat exchanger is installed on the second pipeline, and the PTC heater and the blower are installed on the heat exchanger. A second one-way valve is also installed on the second pipeline. The end of the second pipeline away from the electronic thermostat is connected to the first pipeline between the radiator and the first one-way valve.

2. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The flow direction of both the first check valve and the second check valve is from the electronic thermostat to the radiator.

3. The integrated thermal management system for new energy vehicles according to claim 2, characterized in that: The opening temperature of the electronic thermostat is not lower than 45°C. When the electronic thermostat is open, the first one-way valve is closed, the second one-way valve is open, and the PTC heater is closed. When the electronic thermostat is closed, the first one-way valve is open, the second one-way valve is closed, and the PTC heater is open.

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